code: def test_survdiff_entry_1():
      # entry times = 0 is equivalent to no entry times
      ti = np.r_[1, 3, 4, 2, 5, 4, 6, 7, 5, 9]
      st = np.r_[1, 1, 0, 1, 1, 0, 1, 1, 0, 0]
      gr = np.r_[0, 0, 0, 0, 0, 1, 1, 1, 1, 1]
      entry = np.r_[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
      z1, p1 = survdiff(ti, st, gr, entry=entry)
      z2, p2 = survdiff(ti, st, gr)
      assert_allclose(z1, z2)
      assert_allclose(p1, p2)
  
imports: import os
  import numpy
  from statsmodels.duration.survfunc import SurvfuncRight, survdiff, plot_survfunc, CumIncidenceRight
  from numpy.testing import assert_allclose
  import pandas
  import pytest
label_desc: Use image node_id 15 for calling a global function with example usage: test_survdiff_entry_1() without return types